Metal-catalyzed Organic Photoreactions. Photoreactions of Compounds Containing a Carbon-oxygen or Carbon-nitrogen Multiple Bond with Alcohols in the Presence of Titanium(IV) Chloride or Uranyl Chloride

Abstract α,β-Unsaturated carbonyl compounds and esters, cyclopropyl ketones, β-diketones, Schiff’s bases, and nitriles were irradiated in several alcohols in the presence of titanium(IV) chloride or uranyl chloride. In the titanium(IV) chloride-catalyzed reactions, the α-carbon atom of the primary alcohols underwent a bond formation, generally with the C=X (or C≡N) carbon atom of the substrates, while the bond formation occurred on a C=C carbon atom of the substrates in the uranyl chloride-catalyzed reactions. The reactions were examined under several conditions, and a possible scheme for the reactions was suggested.